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#geography #geology #history #landmarks #mining #wiki
By the 20th century, the Feengrotten (Saalfeld Fairy Grottoes) had been largely forgotten. But in 1910 the old mine was rediscovered and explorers took note of the fantastic mineral deposits that had accumulated over the geologically short period of three centuries.
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Saalfeld Fairy Grottoes - Wikipedia
istorically, alum was employed in a range of medicinal products, as a food preservative and in clarifying water. However, in the 19th century more effective chemical compounds were developed, and alum ceased to be a profitable mining product. <span>By the 20th century, the Feengrotten had been largely forgotten. But in 1910 the old mine was rediscovered and explorers took note of the fantastic mineral deposits that had accumulated over the geologically short period of three centuries. In 1913 the third chamber with the "Fairy Kingdom" was discovered, and shortly before the outbreak of World War I in 1914 tours began to be offered to the public. [3] At th


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